1、HD Multimedia Interface 4X1 Quad Channel Multiviewer: This 4 in 1 output HD multimedia interface multiviewer allows to display up to 4 HD multimedia interface input sources on 1 output screen. 2、5 View Modes: This switch provides multiple ways to view source devices, it can display 1, 2 or 4 input source devices at the same time. 3、Multi Function: SPDIF coaxial sound output format supports for Dolby digital (AC3), DTS supports 5.1 channel. Support infrared RC, can also be directly controlled by buttons. 4、High Resolution: The HD multimedia interface resolution supports up to 1080P 60Hz, and the HD multimedia interface output resolution supports 720P 1080P. 5、Easy to Operate: HD multimedia interface multiviewer switch is controlled by RS‑232 communication, the machine can be upgraded with software, and the equipment can be controlled by computer.equipment can be controlled by computer. Item Type: HD Multimedia Interface 4x1 Quad Multi Viewer Material: Metal Input Interface: 4 x HD Multimedia Interface Output Interface: 1x HD Multimedia Interface, 1 x Coaxial, 1 x RS232 Input HD Multimedia Interface Resolution: 1080P 1080i 720P 576P 576i 480P 480i HD Multimedia Interface Maximum Transmission Bandwidth: 225MHz HD Multimedia Interface Maximum Transmission Rate: 6.75gGbps Input and Output TMDS Signal: 0.5-1.5vp-p (TTL) Input and Output DDC Signal: 5vp-p (TTL) Remote Control Battery: CR2025 Button Battery (Not Included) 1 x HD Multimedia Interface 4x1 Quad Multi Viewer 1 x Remote Control 1 x Driver CD 1 x Power Adapter 1 x Manual